<nav class="navbar navbar-default" role="navigation">
    <div class="container-fluid">
        <div class="collapse navbar-collapse navbar-collapse-example">
            <!-- 左侧的导航项目 -->
            <ul class="nav navbar-nav navbar-left">
                <a class="navbar-brand" href="/admin/index">基于角色的权限管理系统</a>
            </ul>
            <!-- 右侧的导航项目 -->
            <ul class="nav navbar-nav navbar-right">
                <li class="dropdown">
                    <a href="" class="dropdown-toggle" data-toggle="dropdown">个人中心<b class="caret"></b></a>
                    <ul class="dropdown-menu" role="menu">
                        <li><a href="/admin/logout">退出</a></li>
                    </ul>
                </li>
            </ul>
        </div>
    </div>
</nav>